Shark Unit with Free Printables - Every Star Is Different The kiddos have moved beyond the basic shark anatomy of head, trunk, tail, fin, etc. When I found this diagram, I loved the extra detail. However, placing all the tiny labels seemed a little daunting. Instead the kiddos will put the diagram together like a puzzle, which will require them to look at the body part labels at the same time.[PDF] Shark Dissection and Observation 3. Does it feel like the shark has hard bones similar to the bones that humans have? 4. What part of the human body has a similar feel to that of the shark? STEP 2: Draw your shark in the space provided on your worksheet. Draw a Side View . Label the head, trunk and tail regions on your picture. Sharks Flashcards | Quizlet The shark has two dark-colored kidneys on either side of the midline. The shark regulates its urinary system in a way unique compared to most other vertebrates. The shark kidney extracts urea from urine and returns the urea to the blood. In this way the water pressure of the shark's body fluids are maintained as high as that of seawater.